Aetieiciat teeth



G. W. GRIMM.

ARTIFICIAL TEETH.

APPLICATION FILED mum. 1919.

Patented July 22, 1919.

2 SHEETS-SHEET 1.

Inventor:

G. W. GRIMM.

ARTIFICIAL TEETH.

APPLICATION FILED mun. I9I9.

2 SHEETSSHEET 2.

1,310Q654. Patented July 22, 1919.

znwnwn USITE1DTATES PATENT OFFICE.

c oEsE w. GRIMM, O WEST HoBo En, NEW JERSEY.

ARTIFICIAL TEETH.

To all whom it may concern;

Be itknown that I, GEORGE W. GRIMM, a

citizen of the United States, residing at West Hoboken, in the county of Hudson and State of New Jersey, have invented certain new anduseful Improvements in'Artificial Teeth, of which the following is a full,

clear, and exact specification. 5

This invention relates to artificial teeth and especially to means for improving the construction of mouth plates carrying a plurality of artificial teeth, and for securing the teeth to said plates.

It is the aim of this invention to lessen the time and expense required for making teeth of this kind, to reinforce the plates so that there willbe no danger of their being broken if dropped, and to strengthen the connections between the individual teeth and the plate. Other objectswill appear as the description proceeds.

The invention will be first hereinafter described in connection with the accompanying drawings, which constitute part of this specification, and then more specifically defined in the claims at the end ofthe. description. j

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views'z'] "l j Figure 1 is a detailed view of one of the anchoring pins which is secured to each of the artificial teeth. 1

Fig. 2 is a plan view of the preferred form of reinforcing member or twisted wire for the mouth plate.

Fig. 3 is a detailed sectional view of a tooth showing how the anchoring pin is secured therein.

Fig. dis a. plan View of the reinforcing member, as in Fig. 2, showing a plurality of teeth fastened thereto by means of the anchoring pins, the split projecting ends of said pins being arranged to overlap one another.

Fig. 5 is a section on the line V'V of Fig. 4.

Fig. 6 is a broken elevation of the device as shown in Fig. 5 except that the mouth plate is shown molded about the reinforcing member, projecting ends of the anchoring pins, and the roots of the teeth.

Specification of Letters Patent. Patented July 22, 1919. Application filed J anuary 31, 1919. Serial No. 274,229. i

. Fig. 7 is a detailed plan view of a modified form of reinforcing member, also showing the split ends of the anchoring pins arranged 61d?) by side instead of overlapped. Flgs. 8 and 9am detailed plan views of other modified forms of reinforcing members, and A Fig 10Iis asection through a tooth, the sohd reinforcing strip and washer such as 1s shown 1n Fig.3, the sectionloeing taken on the line VIII-VIII of F igl 7 and showing the mouth plate in dotted lines.

j The first step in making artificial teeth in aocordancewith this invention is to prepare an. anchoring pin 1, such as is shown ll'llFlg, 1, for each tooth. Each of these pins has its lower end portion threaded or roughened at 2 and its upper end portion split by the slip 8 into two ormo-re prongs 4:.

A relnforcing member is also prepared, preferably oftwisted wire 5, Fig. 2, having spaced open loops 6 formed therein correspondingto the teeth which are'to be fastened thereto. The anchoring pins are then secured in cavities 8 in the artificial teeth 7 by meansof. cement 9 which engages the screw threads or roughened lower end portion of .each pin and firmly holds the same inthetooth,aas illustrated in Fig. 3. The cement may be introduced into the tooth for .fastening.the anchoring pin therein after the tooth is finished, or it can be baked in "ft/he tooth, asdesired. 7 I

:When the anchoring pin is secured in the tooth, as just described, the split upper end portion is left projecting from the tooth, and said projecting ends are passed through one of the loops 6 in the reinforcing member and the prongs bent down for fastening said tooth to said member. It will be understood that the reinforcing member may be of any desired length and adapted to have as many teeth attached thereto as required. As shown in Figs. 4 and 5, the prongs 4 of the anchoring pins are overlapped on the reinforcing member 5 at 11, but said prongs may be differently arranged, if desired, as suggested in Fig. 7 where said prongs are shown arranged side by side as at 14 and inclined across the reinforcing member.

After the desired number of teeth have been thus secured to the reinforcing mem ber, the plastic material to form the mouth 12 that it will not break if it should be accidentally dropped.

Instead of the twisted wire reinforcing member which has been described, a solid metal strip 13, Fig. 7, may be used, said strip being provided with holes 20 for the passage of the prongs of the anchoring pins in thesame manner as the loops 6 of the twisted wire member 5. The holes in the strip 13 are round, but in lieu of said round holes elongated slots 16 may be provided to allow for adjustment of the teeth along the strip 15, Fig. 8. The strip may also be made in sectionsinstead of continuous, as indicated at 17, 18fand 19, Fig. 9, and some sections or parts of the same strip may have some round holes 20 and some elongated slots 16 therein, so that certain teeth may be placed in fixed relation to the strip and others adjusted on said strip with respect to the fixed teeth to obtain the best results.

lVhat has been said about making the strip in sections applies, of course, equally to the twisted wire reinforcing member which may be cut to any required lengths.

As shown in Figs. 3 and 10, a washer 10 may be placed around the prongs of the anchoring pin over the filling of cement, and said washer be then interposed between the tooth and the reinforcing member when they are assembled. The washer will, of

I claim as new and desire to secure by Letters Patent of the United States is 1. The combination-with artificial teeth and a mouth plate, of a reinforcing member embedded in said plate, and anchoring pins secured to the individual teeth and having split projecting stems interlocked with said reinforcing member.

2. The combination with artificial teeth and a mouth plate, of areinforcing member embedded in said plate and having spaced openings therein, and anchoring pins carried by the individual teeth and having split projecting stems passed through said openings in the reinforcing member and bent down upon the face of said member where they are also embedded in the plate.

3. The combination with artificial teeth and a mouth plate, of a reinforcing member of twisted wire embedded in said plate, and anchoring pins carried by the individual teeth and having projecting stems interlocked with said twisted wire member.

4. The combination with artificial teeth and a mouth plate, of a reinforcing member of twisted wire having spaced loops formed therein and embedded in said plate, and anchoring pins carried by the individual teeth and having projecting stems interlocked with said loops of the wire member.

5. The combination with artificial teeth and a mouth plate, of a reinforcing member of twisted wire having spaced loops formed therein and embedded in said'plate, and anchoring pins carried by the individual teeth and having split projecting stems passed through said loops inthe wire member and bent over upon said member where they are also embedded in the plate.

In testimony whereof'I have signed my name to this specification.

, chosen w GRIMM.

Copies of this patent may be obtainedjor five cents each, by addressing the Commissioner of Patents,

Washington, D. G. a 

